发明名称 |
METHOD FOR CEMENT PLACEMENT IN HORIZONTAL WELLS |
摘要 |
A well completion process for improved cement placement in a horizontal wellbore (10) where a fluid is circulated down the wellbore (10) for conditioning and cleaning it. Afterwards, a production tube (12) containing centralizers (14) is positioned centrally within the wellbore (10). Next, a "spacer fluid" is circulated within an annulus (18) formed by the space between the tube (12) and the wellbore (10) so as to clean the annulus (18) out. Subsequently, a cement having a density greater than the spacer fluid is pumped into the annulus (18). Thereafter, a light weight cement is pumped into the annulus (18) thereby overriding the heavier cement and removing voids in the annulus (18) resulting in more efficient cement placement. |
申请公布号 |
WO9408126(A1) |
申请公布日期 |
1994.04.14 |
申请号 |
WO1993US09213 |
申请日期 |
1993.09.28 |
申请人 |
MOBIL OIL CORPORATION |
发明人 |
JENNINGS, ALFRED, ROY, JR. |
分类号 |
C09K8/42;E21B33/14;(IPC1-7):E21B33/14 |
主分类号 |
C09K8/42 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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